ET MALWARE Win32/Injector.BBYK Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Injector.BBYK Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/upload.php"; endswith;
    http.content_type;
    content:"multipart|2f|form|2d|data|3b 20|boundary|3d 2d 2d 2d 2d|"; startswith;
    http.request_body;
    content:"Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d 22|file|22 3b 20|filename|3d 22|blob|22|"; fast_pattern;
    content:"name|3d 22|blob|5f|num|22|"; distance:0;
    content:"name|3d 22|total|5f|blob|5f|num|22|"; distance:0;
    reference:md5,02074ca4d051755fa756e95166d56825;
    classtype:trojan-activity;
    sid:2039579; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_10_26, deployment Perimeter, malware_family Win32_Injector_BBYK, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_26;
)